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darrenjaworski/README.md

Created August 10, 2017 19:47
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Smooth color svg gradient.
Raw
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var width = 50;
var height = 600;
var color = d3.scaleLinear()
.domain([0, .1, 1, 1.01, 3, 3.01, 4.5, 4.51, 6])
.range(['#ffffff', '#CBCBFF', '#004DFF', '#BFFEBF', '#009501', '#FEFEBE', '#E5D42F', '#FEBEBE', '#DC0000']);
var svg = d3.select('body')
.append('svg')
.attr('width', width)
.attr('height', height);
var defs = svg.append('defs');
var linearGradient = defs.append('linearGradient')
.attr('id', 'linear-gradient')
.attr('x1', '0%').attr('y1', '100%')
.attr('x2', '0%').attr('y2', '0%');
linearGradient.selectAll('stop')
.data( color.range() )
.enter()
.append('stop')
.attr('offset', function(d, i) {
return color.domain()[i] / color.domain()[color.domain().length - 1];
})
.attr('stop-color', function(d) {
return d;
});
svg.append('rect')
.attr('width', width)
.attr('height', height)
.style('fill', 'url(#linear-gradient)');
</script>
</body>
</html>
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